Redsn0w Freezes at Uploading RamDisk in Windows 7 [How-To Fix]

Couple of weeks ago, we shared a tutorial to jailbreak iOS 4.2.1 on iPhone 4/3GS/3G, iPod Touch 4G/3G/2G & iPad using Redsn0w 0.9.6 but many users reported that they are still unable to jailbreak their iDevice as Redsn0w freezes and then crashes at 'Uploading ramdisk' step during the jailbreak process. I have found an easy workaround for this problem which worked for many users and i hope this will work for you as well if you are facing the similar issue.This fix should for work for the following Redsn0w errors:

Solution:

In order to solve this issue, you need to run Redsn0w as an administrator in Windows XP SP2 compatibility mode and set the Redsn0w process affinity to CPU 1 through 'Task Manager'. To do so, follow the steps below:

Right-click on Redsn0w.exe and choose 'Properties' from the context-menu.

Switch to 'Compatibility' tab and choose 'Windows XP (Service Pack 2)' as the compatibility option. Click OK button to close the 'Properties' window.

Again right-click on Redsn0w.exe and choose 'Run as administrator' from the context-menu.

Finally useful solving of Windows task management appeared! Thanks for it and all the users are pleased to know what to do with the errors. As for me personally I used to works with Windows task manager, but now I shifted to comindware task management (http://www.comindware.com/task-management/) and have no problems with errors and similar nuisances.

OK, so i have an iphone 3g 4.2.1 and baseband 05.15.04. i ran redsn0w as administrator, do the affinity thing after clicking “show processes from all users” and set it to only have cpu 1(mine has 7 cpu’s though, don’t know if that matters). then i set it to high priority. then, when i get to the point where it downloads iPad BB files, it just sits like that for a while and then redsn0w shuts off and i gotta reboot my phone. somebody help me please, i’ve been wrestling with pretty much every problem possible over the last few days on this.

ok so i got 0.9.6rc8 and downloaded the ipsw through firefox this time and now when it gets to the point where it fetches baseband data i get “baseband fetching error”. and it says check ur internet connection. is that the only problem or is there something else i can do? sorry for all the replies on the same thing but i keep finding new workarounds and then those new workarounds end in more trouble lol. anyways, help would be appreciated. thanks.

Yep, Redsn0w is unable to fetch iPad baseband files as your internet connection is either slow or down. Make sure your firewall is turned OFF and there is no Antivirus running!

Mike • 5 years, 7 months ago

ok, lol. so i found out that the whole problem with “baseband fetching error”, u simply have to make sure ur browser is up, worked for me. anyways, so i got past the bb fetching error but now i’m back to 1 of my original problems. Redsn0w gets through everything and says finished, but instead of my phone showing the icon of the harddrive and saying “downloading jailbreak data” my phone just gets hung up on a blank black screen with the backlight on. Redsn0w meantime just says finished and the rest of the process takes place on my device. Do u possibly know of a way around this now? please tell me u do, i’m newly stationed in Sicily and just wanna use my phone over here. thanks a lot.

Ok. Now here is the catch. Jumping from iOS 4.x.x to iOS 4.y.y requires SHSH blobs *even on iPhone 3G and iPod Touch 2G (MB)*. So you need to restore custom iPhone OS 3.1.2 IPSW and then upgrade to iOS 4.1 or 4.2.1 (Your choice).

Mike • 5 years, 7 months ago

ok, so after downloading all the ridiculous amounts of programs needed to downgrade and downgrading to 3.1.2, it just looked like it was in recovery mode in the background but i could “slide for emergency” for some reason. anyways i couldn’t use the phone. i then realized that it was because the only blobs that tinyumbrella saved were 4.1 and 4.2.1. so then i tried restoring the phone to 4.1 and then jailbreaking to 4.2.1. and now i’m back to the same blank black screen with backlight that i had in the first place. it worked after restoring it to 4.1 through itunes. but when i tried to jailbreak to 4.2.1 i just got the same problem. so, since i can’t go back to 3.1.2, am i unable to jailbreak my phone? thanks for all the help so far, but any more insight would be awesome. thanks

You can still downgrade to iOS 3.1.2 and then you can still upgrade to iOS 4.1. Also when u were on iOS 3.1.2, you were only a click away to jailbreak and hactivate your iPhone using blackra1n. I am not sure if your baseband has been upgraded to iPad baseband or not. But if its not upgraded to iPad baseband, you can restore to stock iOS 4.2.1 IPSW and then jailbreak it with Redsn0w. Again to restore stock or custom iOS 4.2.1 IPSW, you need to restore iOS 3.1.2 first then you will be eligible to jump to iOS 4.2.1. I would personally recommend you to stick to iOS 3.1.2 or iOS 4.1 as both of these releases were much stable with no battery life and recovery loop issues.

Mike • 5 years, 7 months ago

oh wow, i can’t believe i was so close. i have baseband 05.15.04 so i should be able to go back to stock 4.2.1. but if ur saying it’s best with 4.1 or 3.1.2, then i’ll stick with that. but i’m guessing i would have to download blackra1n. so to recap, redowngrade back to the 3.1.2 where i’m stuck with only being able to “slide for emergency” and then use blackra1n to jailbreak/unlock to 4.1 since i got the blobs for 4.1 and because it’s more stable with no battery life issues. i’m sorry if i sound stupid, i’m not a huge computer person and i just started this adventure earlier this week when i arrived here so bare with me here. thanks to u and google, i’ve learned a lot so i appreciate it. ciao.

1. Downgrade back to iOS 3.1.2 (No blobs needed) (You can jailbreak using blacra1n but can not unlock because your baseband is not directly unlockable with Ultrasn0w).2. Blackra1n can only jailbreak iOS 3.1.23. Jumping from iOS 3.1.2 to iOS 4.1 do not require SHSH blobs but jumping from iOS 4.1 to iOS 4.2.1 requires SHSH blobs.4. You can jailbreak iOS 4.1 using Redsn0w http://bit.ly/hVbmfC

Mike • 5 years, 7 months ago

alright well, i actually need to unlock my phone cuz i’m in Europe coming from the U.S. and need to get a new provider, i just want to jailbreak it in the process. i was hoping i could just use redsn0w to jailbreak and unlock 4.1 but it’s looking like i can’t do that. how do i jailbreak and unlock my 3G 4.1 with 5.15.04?

For that, upgrade to iPad baseband using this guide http://bit.ly/gI22Px and the downgrade back to iPhone OS 3.1.2 (Custom IPSW). Once done, upgrade to iOS 4.1 (Custom IPSW) and unlock it with Ultrasn0w.

Mike • 5 years, 7 months ago

it still gets a blank black screen with backlight when trying to use redsn0w to upgrade to 6.15 in order to make it unlockable. it was doing this when i had 4.2.1 and it’s doing it now with 4.1. i’m using 0.9.6rc8 instead of the beta tho cuz i already got it and it should be better anyway right? also itunes won’t let me restore my phone because it says the software’s too old. so how can i upgrade/downgrade anymore if i can’t even restore it and get to the screen where i do the hold shift thing and then click restore?

When you use Redsn0w, at what step it gets stuck? Uploading ramdisk? Fetching baseband? Waiting for reboot? etc. Do take these precautions http://bit.ly/grQtBl before using Redsn0w. Also resume the conversation here http://bit.ly/etlFRp I think this thread is getting too lengthy :D

Mike • 5 years, 7 months ago

alright man, so i finally got it to work. i found a thread where someone was talking about having the black screen after using redsn0w and found a solution posted by someone else. they said that if u put ur computer into “safe mode with networking” by pressing f8 while the computer boots and going to advanced options, ur jailbreak will work. they also said to log in as administrator. but ya pretty much they realized that running the computer regular would run too many processes on the side and not allow the jailbreak to go all the way through. so after booting up in safe mode, i just ran redsn0w 0.9.6rc8 and chose to upgrade ipad baseband and install cydia and a few other options. it worked flawlessly and my phone’s now jailbroken, and after installing ultrasn0w i also have successfully unlocked my phone with the 6.15 baseband firmware. thanks for all the help along the way, i learned a lot. hope my experience helps u help others with my same problem. alright, ciao.

Try After Try and after reading this long blog up to this point it just occured to me to make the compatibility to Windows 95 OMG what a relief after 1 year and 1 month and 1 day exactly since 9/13/2012 to 10/14/2012 it worked.

Hi i am not able to edit the affinity in my pc. It says Access denied. So tell what must i do. Even though i log in with the administrator prevailages i am not able to edit the same. Kindly let know with any other process that is available.

Hey kindly please reply me with my query. Also i wish to know, now presently i have JB using Greenpoision, i do not have cydia with me. If i JB Again do i lose the JB or the files that are there. OR do i need to do a fresh restore of the OS.